Here are the release notes, any comments are welcome:
https://cwiki.apache.org/confluence/spaces/LUCENE/pages/446071262/ReleaseNote10_5_1


On Wed, Aug 5, 2026 at 1:59 PM Alan Woodward <[email protected]> wrote:

> Sorry, yes, that’s what I meant!
>
> > On 5 Aug 2026, at 13:51, Michael Sokolov <[email protected]> wrote:
> >
> > I didn';t see a branch_10_5_1, so my backport was to branch_10_5
> >
> > On Wed, Aug 5, 2026 at 7:39 AM Alan Woodward <[email protected]>
> wrote:
> >>
> >> I have back-ported https://github.com/apache/lucene/pull/16450 to the
> 10.5.1 branch.
> >>
> >> Thanks Ignacio!
> >>
> >> On 5 Aug 2026, at 12:23, Michael Sokolov <[email protected]> wrote:
> >>
> >> OK, I just did that, thanks
> >>
> >> On Wed, Aug 5, 2026 at 7:12 AM Ignacio Vera <[email protected]> wrote:
> >>
> >>
> >> Sure Michael,
> >>
> >> The fix looks well self-contained (and tiny), please feel free to
> backport it to branch 10.5.
> >>
> >> On Wed, Aug 5, 2026 at 11:36 AM Michael Sokolov <[email protected]>
> wrote:
> >>
> >>
> >> That bugfix  was in https://github.com/apache/lucene/pull/16403/
> >> (commit: 2459ab7749c6062d0ee5a946430745c46cd9fda4)
> >>
> >> On Wed, Aug 5, 2026 at 6:33 AM Michael Sokolov <[email protected]>
> wrote:
> >>
> >>
> >> Is it possible to also include
> >>
> >> * GITHUB#16400: Restore HNSW graph reuse during merges under per-field
> >> vectors formats,
> >> including the default codec. Since 10.4.0 the merger tested the
> >> per-field wrapper instead
> >> of the unwrapped reader, so every merge rebuilt the graph from
> >> scratch. (Jeho Jeong)
> >>
> >> this was a pretty bad regression I think, although indexing
> >> performance only.  It is lacking a CHANGES entry on main, sorry
> >> (because the bug did not occur on main)!  I can address that
> >> separately
> >>
> >> On Wed, Aug 5, 2026 at 4:46 AM Ignacio Vera <[email protected]> wrote:
> >>
> >>
> >> +1
> >>
> >> I spoke with Alan offline and I will be the release manager. I am
> planning to build the release candidate tomorrow if there are no concerns.
> >>
> >> Thanks,
> >>
> >> Ignacio
> >>
> >> On Wed, Aug 5, 2026 at 9:31 AM Alan Woodward <[email protected]>
> wrote:
> >>
> >>
> >> Hi all,
> >>
> >> We’ve identified a nasty bug in lucene 10.5.0, where boolean queries
> using one of the doc-values based range queries as an exclusion clause can
> return incorrect results (see https://github.com/apache/lucene/pull/16450).
> I think this warrants a bugfix release, and I’m happy to act as release
> manager (unless anybody else would like to volunteer :).
> >>
> >> We have a number of bug-fixes in the 10.6 changes section, but none of
> them look to me as if they are major enough to need back porting.  There
> are a couple of performance bugs which could go either way but I’d lean
> towards keeping the release as small as possible to get this fix out
> quickly.
> >>
> >> - Alan
> >>
> >>
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